The family of a Boston police officer who was injured during the Watertown shootout with the Boston Marathon bombers in 2013 will receive a line-of-duty death benefit, State Retirement Board officials said Thursday.

The one-time benefit of $150,000 will go to Dennis Simmonds’ family, who said in an application to the board that the 28-year-old decorated officer died as a result of injuries he sustained on the job, including events in Watertown that followed the Marathon bombings.

“The board today reviewed the application submitted on behalf of Officer Dennis Simmonds and we found that it met the requirements for line-of-duty benefits,” said Nick Favorito, executive director of the Massachusetts State Retirement Board. “The board wanted to acknowledge the officer’s efforts on that night of April 19, 2013.”

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Simmonds was one of the first officers to rush to the chaotic scene in Watertown that night in which Marathon bombers Tamerlan and his brother Dzhokhar Tsarnaev engaged in a gun battle with police and tossed homemade bombs.

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Favorito declined to discuss the nature of Simmonds’ injuries, but pointed to a report produced by a state medical panel last month that found the officer’s death “was the natural and proximate result of an injury sustained during the course of his employment.”

The panel also stated that “his injuries were persistent after the episode involving the gun battle between police and Boston Marathon bombers . . . in Watertown.” The report suggested Simmonds’ death was probably the fifth related to the Marathon bombings.

Speaking to reporters after the board’s ruling, state Treasurer Deborah Goldberg, said, “This officer clearly gave his life to keep all of us safe.” Goldberg is the chairwoman of the board.

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Simmonds’ family was not present for the hearing Thursday, but Favorito said the board immediately notified the officer’s relatives of their decision. He said it would take a couple of weeks before the benefit is released.

“Dennis was one of the first responding officers in Watertown,” said Rose, adding he drove Simmonds away from the explosions after he was injured. “He made the ultimate sacrifice. Dennis was a bright, shining star.”